public SiftFeature(VlSiftKeypoint keypoint, SiftKeyPointOrientation[] keypointOrientations) { this.keypoint = keypoint; this.keypointOrientations = keypointOrientations; }
public SiftKeyPointOrientation[] keypointOrientations; //关键点的方向及方向对应的描述 #endregion Fields #region Constructors public SiftFeature(VlSiftKeypoint keypoint) : this(keypoint, null) { }
public static extern int vl_sift_calc_keypoint_orientations(IntPtr f, double[] angles, ref VlSiftKeypoint k);
public static extern void vl_sift_keypoint_init(IntPtr f, ref VlSiftKeypoint k, double x, double y, double sigma);
public static extern void vl_sift_calc_keypoint_descriptor(IntPtr f, IntPtr descr, ref VlSiftKeypoint k, double angle);